Self-ejectable port fixing device

1. A self-ejectable port fixing device for contact connecting with a port having a port chip comprises:

a casing having an opening;

a receptacle chip provided in the casing,

wherein the port chip is allowed to insert into the opening of the casing to contact with the receptacle chip; and

an elastic unit and a locking unit which are provided in the casing, with the elastic unit being compressed directly or indirectly by the port chip so as to accumulate elastic potential energy as the port chip is getting closer to the receptacle chip, during the port chip being inserted into the casing through the opening of the casing to contact with the receptacle chip,

wherein the port fixing device further comprises a supporting unit that is provided in the casing for supporting the receptacle chip,

when the port chip is in contact with the receptacle chip, the locking unit locks the port chip at this contact position, and

when the locking unit releases the port that is locked at this contact position, the elastic unit releases the elastic potential energy to push the port chip to be detached from the receptacle chip.

2. The port fixing device of claim 1 further comprises a stopper that is connected to the elastic unit, wherein

a handle end of the port chip pushes the stopper to compress the elastic unit as the port chip is getting closer to the receptacle chip during the port chip is inserted into the casing through the opening of the casing to contact with the receptacle chip, and

when the locking unit releases the lock, the elastic unit releases the elastic potential energy so that the stopper pushes the handle end of the port in a direction away from a bottom wall of the casing, thus the port chip is detached from the receptacle chip.

3. The port fixing device of claim 2 , wherein

the stopper is arranged opposite to the receptacle chip, a side of the stopper and a side of the receptacle chip which face to each other are arranged in parallel and are spaced by a distance,

the distance is equal to or slightly less than a width of the port chip and far less than a width of the handle end of the port, and

said side of the receptacle chip which faces to the stopper is a side used for contacting with the port chip.

4. The port fixing device of claim 3 , wherein

the supporting unit comprises a supporting rod, with a bottom end of the supporting rod being fixed on a bottom wall of the casing and the receptacle chip being provided on a top end of the supporting rod, and

a distance between said side of the stopper and said side of the receptacle chip which face to each other is equal to the width of the port chip.

5. The port fixing device of claim 3 , wherein

the supporting unit comprises a spring piece having an inclined portion and a horizontal portion, with an angle defined by the inclined portion and the horizontal portion as its two sides and its vertex at a connection between the inclined portion and the horizontal portion being an acute angle,

the horizontal portion is provided on the bottom wall of the casing, and a free end of the inclined portion is connected to the receptacle chip,

the acute angle opens toward the stopper, and

the distance between said side of the stopper and said side of the receptacle chip which face to each other is slight less than the width of the port chip.

6. The port fixing device of claim 2 , wherein

a through hole is opened in the stopper, the receptacle chip is provided in the through hole, the side of the receptacle chip which is used for contacting with the port chip and the side of the through hole which faces to said side of the receptacle chip used for contacting with the port chip are arranged in parallel and spaced by a distance, and

said distance is equal to or slightly greater than the width of the port chip and far less than the width of the handle end of the port chip.

7. The port fixing device of claim 6 , wherein

the supporting unit comprises a supporting rod, with a bottom end of the supporting rod being fixed on the bottom wall of the casing and the receptacle chip being provided on a top end of the supporting rod, and

the distance between said side of the receptacle chip which is used for contacting with the port chip and said side of the through hole which faces to said side of the receptacle chip used for contacting with the port chip is equal to the width of the port chip.

8. The port fixing device of claim 6 , wherein

the supporting unit comprises a spring piece having an inclined portion and a horizontal portion, with an angle defined by the inclined portion and the horizontal portion as its two sides and its vertex at the connection between the inclined portion and the horizontal portion being an acute angle,

the horizontal portion is provided on the bottom wall of the casing, and a free end of the inclined portion is connected to the receptacle chip,

the acute angle opens toward the side of the through hole in the stopper which faces to said side of the receptacle chip used for contacting with the port chip,

the distance between said side of the receptacle chip which is used for contacting with the port chip and said side of the through hole which faces to said side of the receptacle chip used for contacting with the port chip is slightly greater than the width of the port chip,

during the port chip is inserted into the through hole of the stopper to contact with the receptacle chip, the handle end of the port pushes the stopper so that an edge of the bottom of the stopper, which is close to the through hole, presses against the inclined portion of the spring piece, thus the inclined portion accumulates elastic potential energy and brings the receptacle chip closer to the port chip so as to clamp the port chip, and

when the locking unit releases the lock so that the elastic unit pushes the stopper to move in the direction away from the bottom wall of the casing, the inclined portion releases the elastic potential energy to bring the receptacle chip to release and move away from the port chip.

9. The port fixing device of claim 1 , wherein

the locking unit is provided on the elastic unit,

the locking unit is triggered when the port chip moves to a position where the port chip is in contact with the receptacle chip, so that a compressed state of the elastic unit is locked, and

the locking unit is triggered again when the port chip goes on moving in a direction toward the bottom wall of the casing, so that the compressed state of the elastic unit is unlocked.

10. The port fixing device of claim 9 , wherein

the locking unit is a push-type switch.